indicated in Figure 1, p. 5. The exact locations 

 are indicated on the maps provided in Section IV, 

 pp. 19-Sl. 



2. CURRENT SITE: Lesquerella humil is is recently 

 documented (1987) from one site, on St. Mary Peak 

 in the Bitterroot Range. The location of this 

 site, including the legal description, latitude 

 and longitude, elevation, and USGS topographic 

 quad name, is provided in Table 1, p. 6. Field 

 surveys in the Bitterroot Range were conducted by 

 the author on 21-S3 and 30-31 July, 1987. 



Throughout this report, the three-digit occurrence 

 numbers are indicated in parentheses after the 

 site names; these correspond to the occurrence 

 numbers provided in the tables and computer print- 

 outs. 



3. HISTORICAL RECORDS: None known. 



^. SITES NOT RECENTLY SURVEYED: Lesquerella humilis 

 has been documented from two additional sites in 

 Ravalli County, Montana (occurrence nos. 002 and 

 003). These locations were studied by Klaus 

 Lackschewitz in 1970 and 1971. The legal 

 descriptions, latitude and longitude, elevations, 

 USGS topographic quad names, and locations of 

 these sites are provided in Table 1, p. 6. Owing 

 to the extreme rarity of the species, and the 

 location of these two populations within the 

 Selway-Bitterroot Wilderness Area, it was decided 

 that field surveys in 1987 should emphasize 

 searches for the species in adjacent suitable 

 habitats. Additionally, the information 

 originally collected by Lackschewitz includes data 

 on associated species and estimated population 

 size. Future field monitoring of these sites is 

 recommended, owing to the global rarity of L. 

 humi lis . 



3. AREAS SURVEYED BUT SPECIES NOT LOCATED: The 

 alpine and timberline flora in the Bitterroot 

 Mountains has been exhaustively studied by 

 Lackschewitz (1970, 1986). The major summits and 

 areas explored in the earlier studies include 

 Lolo, Sweeney, St. Mary, St. Joseph, "East St. 

 Joseph", Trapper, Bass, Ranger, Boulder, Bare, 

 Watchtower, and West Como peaks. Pyramid Buttes, 

 Gash Point, Glen Lake Mtn., Blodgett Mtn., Ward 

 Mtn., Lost Horse Mtn., El Capitan, Chaff in Creek 

 Headwater Basin, and Mt . Jerusalem. In discussing 

 the possible locations where L. humi lis might 

 additionally be found, Lackschewitz (pers. comm.) 



